On the basis of molecular forces, polymer can be classified as -

1. Elastomers

2. Fibres

3. Thermoplastic polymers 

4. All of the above

The term copolymerization means formation of polymer from : 

1. The same monomer.

2. Two or more different monomers.

3. Acid and base.

4. Elastomer.

The examples of thermoplastics and thermosetting polymers are respectively :

The monomers used for getting the following polymers are respectively -

 (i) Teflon (ii) Bakelite

1. i = Formaldehyde (HCHO) and phenol; ii = Vinyl chloride

2. i = Tetrafluoroethylene; and ii = Vinyl chloride

3. i = Vinyl chloride; ii = Formaldehyde (HCHO), and phenol

4. i = Tetrafluoroethylene; ii = Formaldehyde (HCHO) and phenol

One of the common initiators used in free radical addition polymerization is -

1. Toluene

2. Ethanol

3. Benzoyl peroxide

4. Acetaldehyde

The presence of double bonds in rubber molecules increase -

1. Viscosity 

2. Elasticity

3. Surface Tension

4. Vapour pressure

The purpose of vulcanization of rubber is/are -

1. To maintain the elasticity of natural rubber.

2. To improve the tensile strength of natural rubber.

3. To use for a wide range of temperatures.

4. All of the above.

The monomeric repeating units of Nylon-6 and Nylon-6, 6 are respectively -

1. Nylon 6 - Caprolactam; Nylon-6,6 - hexamethylene diamine and adipic acid

2. Nylon 6 - hexamethylene diamine and adipic acid; Nylon-6,6 - Caprolactam

3. Nylon 6 - Caprolactam and adipic acid; Nylon-6,6 - hexamethylene diamine

4. Nylon 6 - pentaethylene diamine and adipic acid; Nylon-6,6 - Caprolactam

The names  of the monomer/s of the following polymers are respectively -

(i) Buna-S   (ii) Buna-N
(iii) Dacron  (iv) Neoprene

1) 1,3-butadiene and styrene, 1,3-butadiene and acrylonitrile, terepthalic acid and ethylene glycol, chloroprene

2) 1,3-butadiene and  acrylonitrile, 1,3-butadiene and styrene, chloroprene, terepthalic acid and ethylene glycol

3) 1,3-butadiene and styrene, 1,3-butadiene and  acrylonitrile, chloroprene, terepthalic acid and ethylene glycol

4) Chloroprene, terepthalic acid and ethylene glycol, 1,3-butadiene and styrene, 1,3-butadiene and acrylonitrile

The monomer in the following polymeric structures are respectively -

(i)

(ii) 

1. Decanoic acid and hexamethylene diamine; melamine and formaldehyde

2. Hexamethylene diamine and formaldehyde; hexamethylene diamine and decanoic acid

3. Decanoic acid and tetramethylene diamine; tetramethylene diamine and formaldehyde

4. Tetramethylene diamine and formaldehyde; decanoic acid and tetramethylene diamine